Question

What are colloids ? state their characteristics class 9
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Answer 1

Explanation:

colloids are hetrogenous mixtures.

the particles of colloids are smaller than particles of suspension but larger than particles of solutions.

it allows the scatter of light .

particles never settle down when left undisturbed.

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Answer 2

Answer:

In chemistry, a colloid is a phase separated mixture in which one substance of microscopically dispersed insoluble or soluble particles is suspended throughout another substance.

Explanation:

1) They appear to be homogeneous but actually they are heterogeneous when observed under microscope. 2) They are not perfectly transparent,it is somewhat translucent. 3) The particles cannot be seen by naked eyes or microscope. 4) The particles do not settle on keeping.